SU1691707A1 - Automobile wheel camber gauge - Google Patents

Abstract

This invention relates to measuring devices for determining the camber angle. The purpose of the invention is to increase the convenience of operation. The device contains a rod 1, on the ends of which brackets 2 and 3 are fixed. On one bracket is mounted a gauge 4 containing a movable tip 5. On the other bracket there is a stop 7 in contact with the clamping element 8 fixed in the center of the wheel opposite to the one being controlled. The camber is determined from the difference in distance between the peripheral points of the rim of the wheel to be controlled and the clamping element. 1 hp ff, 2 ill.

Description

D

€:

/ g fl

k

/

D

EL

&

..A

oh oh

4 About VI

S

Fig1

The invention relates to measuring devices for determining the camber angle.

The purpose of the invention is to increase the convenience of operation.

Figure 1 schematically shows the device; 2 is a measurement circuit.

The device contains a rod 1, on the ends of which brackets 2 and 3 are fixed. On one bracket is mounted a gauge 4 containing a movable tip 9, the linear movement of which is fixed along its axis by means of a scale. A support unit is installed on the other bracket with a stop 7, which in working position is in contact with the clamping element 8. The configuration of the stop 7 (for example, k (onus, needle or ball) can be selected depending on the shape of the clamping an item.

Before measurements, the dimensions and confidences ({uracium of the entire device must be adjusted in accordance with the specific geometrical parameters of the vehicle. Thus, it is possible to contact the meter with the upper or lower point of the disc of the wheel being monitored simultaneously with the contact stop 1m element installed in the center of the disk of another wheel. Adjustment operations consist in changing the length of the rod, the distance hr to the meter and the stop, mutual reversal in case of The final adjustment operation orients the axis of movement of the tip 5 so that its continuation passes through the center of the stop 7, which is achieved by turning the meter around the axis of the bracket and around its own axis while visually monitoring the orientation of the tip.

The device provides the definition of a camber as the vertical angle y between the direction of the actual axis of rotation of the wheel being monitored and the line 00 connecting the centers of the pairs of tapered bearings of the two wheels (Fig. 2). This ensures the correctness of the results under the conditions of real difference between the geometrical and physical parameters of the two wheels.

The magnitude of the collapse, as follows from Fig. 2, can be determined through the difference in distances MWT and MH0, where MW and Mn are the extreme upper and lower positions of the peripheral point of the wheel being tested, resulting from its rotation by half a turn, and the point O is the center of bearing another wheel. The required camber angle in minutes is determined by the formula

- l, 3438

Cmin -

where p is the average angular value of y. The small angles y allow, instead of the true center of the bearings O, to use a point close to it on the continuation of the actual axis of rotation of the same wheel.

Since cos p and R are geometrical parameters related to wheel radius and gauge, i.e. are constant for a particular brand and even a whole class of car, counting the angle y

in minutes, it is reduced to multiplying the measured difference by a constant for a given model or class of vehicles.

Determination of the camber angle from to

the power of the device is performed as follows

The car is placed on a flat and approximately horizontal platform. Choose a point mv on the upper outer

the peripheral part of the rim of the wheel to be controlled; If possible, close the center of the disk of the other wheel or to the center of its protective or decorative cap;

using a magnet, suction cup or bolt joint). The device is installed with a TEK so that at the same time the contact of the ovore of the support with the clamping element and the tip with the point MV occurs. Wherein

take the countdown meter. Next, with the exception of the clamping element, the device is removed, and the car is rolled so that both wheels turn half a turn. Again, the operation of contacting with the clamping element and the tip with the previously selected point, which occupied the lower position of the MP, is repeated, after which the second reading of the meter is taken.

Measured value - difference difference

Combo meter multiplied by translated

coefficient, gives the value of the collapse in minutes.

Claims (2)

1. A device for determining the camber angle of an automobile, comprising a rod and brackets mounted pivotally on the ends of the rod perpendicular to its axis, characterized in that, in order to increase the convenience of operation, it equipped with a stop mounted on one of the brackets, a gauge with a movable tip mounted rotatable on the other bracket with the possibility of fixation and contacting with the peripheral the rim point of the controlled wheel, with the clamping element on the opposite code in the center of its disk, is set to contact with the stop. 2. The device according to claim 1, about tl and h and e e with the fact that the rod and the brackets are made sliding. //////////// 7 // 7 // 7 / ////////////// FIG. 2